Apparatus for extinguishing fire



July 17, 1928.

- 1,677,875 C. SZILVAY V APPARATUS FOR EX'I INGUISHING FIRE Filed Dec.24, 1924 lNl/ENTOR COANEL ws Jz/L :/A Y

,4TTO/17NEYS Patented July 17, 1928.

" nuirsn STATES I 1,677,875 PATENT OFFICE.

CQBNELI'US SZILVAY, OF BUDAPEST, H UNGABY.

APPARATUS FOR EXTINGUISHING FIRE.

Application filed December 24, 1924, Serial No. 757,834, and in HungaryDecember 29, 1828.

This invention relates to anapparatus for.

extinguishing fire.

It is well known that with certain kind I of fire-disaster it is muchmore preferable out in the claims.

to use a powdery substance for extinguishing the fire than to use waterfor the same .purpose. With this method of extinguishing fire theextinguishing powder enerally has been blown on to the burning o jectsby means of indifierent gases for example suc as carbonic acid storedunder pressure in bottles or the like. This method of extinguishin firethough very efiicacious and I doing no 1 arm to the objects saved by thel5 fire is associated with the disadvantage that the carbonic acid aftera certain period of being kept stored escapes from the storage bottles,and this circumstance apart from the loss of material may become verydan erous by the fluid under pressure being no onger present whennecessary. A. further disadv vantage of this known method of :extinishing fire is that only a small quantl tp 0 fluid under pressure maythus be ready or use so that in case of big fires the carbonic acid becomes quickly'consumed whereby a stoppage in extinguishing is caused. p

The object of the present invention s to provide an apparatus in whichthe exhaust gases of a combustion engine are employed for blowing a fireextinguishing powder to theplace of fire.

This invention consists in the construction and arrangement of the partsof the apparatus as hereinafter described and pointed In theaccompanying drawing one. form of a fire engine adapte tocarry themethod according to the invention into effect 15 diagrammatically shownby way ofv example.

' Referring now to the drawing 1 indicates the powder receptacle theextinguishing powder being conveyed from this receptacle by means of aconveyor 2 to the nozzle 3. 4 indicates acombustlon engine the exhaustgases of whichare escaping through the pipe 5. At 6 the pipe'te cooler7. While asslng't oplesns into. a tubecoolerthe exhaust gases of t ecombustion engine are cooled and thus they are enabled to leave thecooler 7 suitably cooled through pipe 8. The pi e 8 opens into acompressor -9 driven by sha 10 of the engine 4, the'same shaft also theconveyor 2 by means of the belt-gearing 11.- The comtpil'gssor 9 com s cP p presses the gases suckedin 8 to a suitable pressure and conveys themthrough the casing 12 to the nozzle 3 the extinguishing powder conveyed.to said nozzle being blown by said compressed gases into the socket 13to which is attached in a well known manner. the hose used whenextinguishing fire. The cooler 7 for cooling the exhaust gases may beot-any desired construetion; in the drawing an air-cooler having asuitable tubing is shown by way of example the air entering through theinlet.

through which the. cooler 7 communlcates with the exhauster 15 there isarranged .a valve 19 establishing communication between the cooler andthe exhauster in its the valve 19 shown position. By turnin from itsposition shown in t e drawing by 90 commumcation is. established betweenthe exhauster and the atmosphere and the suction-pipe of theexhauster'is suckingin 7 air through thesocket 20. 'Afterthe fire hasbeen extinguished-the exhauster 15 can be used to suck out the gasesalready blown mto'the place of the fire to extinguish same, by fasten ngto the socket 20 a suction-hose leading. to saidplace of fire. Thus,after the fire has been extinguished the rooms can be made accessible ina few minutes.

i In certain caseswhere the exhaust gases of the combustion engine arenot sufiicient to convey the extinguishing-powderor if in consequence oft e operation of the compressor 9 the pressure in the pipe 5 is loweredbeyond the necessary degree, the reliefthe pipe 5 opens whereby somepart of the air sucked in through theradiator of the engine 4 is ledinto the pipe 5 and being mixed up with the exhaust gases enters thecompressor 9 to be further conveyed to the nozzle 3. This uantity of airis msuflicient for rousing the e since when reaching the lace of thefire it is strongly dilute by eing mixed .up with the exhaust asesconsisting chiefly of carbonic acid an nitrogen.

valve 21 located at the outslde opening of lihe relief-valve 21 ischarged with a spring in a well known manner so that it closes when thepressure in the pipe 5 is raised to a certain degree whereupon only theex- 5 haust gases can reach the place of fire.

The whole apparatus described above'is mounted on a wagon driven by theengine 4 so that it can be used as a fire-engine.

- Claims p 1., A fire extinguishing apparatus comprising a combustionengine, a pipe leading away from the exhaust gases of said combustionengine. an air cooler connected to said pipe I and having a tubing, anexhauster actuated 15 by said combustion engine sucking air through saidtubing, a nozzle, a compressor driven by the said combustion engineconnected to said cooler, sucking the exhaust gases from the said coolerand conveying them to the nozzle, a receptacle for extinguishing powder,means for conveying the extinguishing powder from said receptacle to thesaid nozzle, means in connection with the said nozzle and with thecompreszor for ixing the extinguishing powder with the exhaust gases andmeans for conducting the mixture to the fire.

2. A fire extinguishing apparatus comprising a combustion engine, a pipeleading away 39 the exhaust gases of said engine, a cooler nema'ira forsaid exhaust gases, means for circulat ing a cooling medium through saidcooler and operated by said engine, a nozzle, a compressor conveying theexhaust gases havin passed from the cooler to the nozzle, an

driven by said engine, a rece tacle for extinguishing owder, means orconveying said powder rom said receptacle to said nozzle, means incommunication with said nozzle and with the compressor for mixin theextinguishing powder with the ex 'iaust gases, and means for conductingthe mixture to the fire,

3. A fire extinguishing apparatus comprisa discharge nozzle, said nozzlecommunicating with said compressor, and a feeding device in saidreceptacle for feeding the powder into said nozzle, and operated by saidengine, In testimony whereof I have signed my name to thisspecification.

oonunmus szinvar.

